High and low gas-pressure regulator



(No Model.)

W. M. JACKSON.

' HIGH AND LOW GAS PRESSURE REGULATOR.

No. 360,774. M Patented Apr. 5, 1887.-

V l/VVENTOI? HIV 8 8' 7 v act description of the invention, such as willUNITED STATES \VALTER M. J AGKSON,

PATENT OF ICE.

OF NE\V YORK, N. Y.

HIGH AND Low GAS-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 360,774, dated April 5,188 7.

Application filed December 16, 1886. Serial No. 22!,769. (No model.)

To all whom it may concern:

Be it known that I, WALTER M. JAoKsoN, of New York,-in the county of NewYork and State of New York, have invented certain new and usefulImprovements in High and Low Gas-Pressure Regulators; and'I do herebydeclare' the following to be a full, clear, and exenable others skilledin the art to which it appertains to make and use the same.

My invention relates to an improvement in high and low pressuregas-regulators.

Objection has arisen to that class of slidingvalve gas-regulatorshitherto in use, because of the fact that the gas-inlet was so formedthat it prevented the very gradual opening and closing desirable; andthe object of my pres ent invention is to provide means for the mostgradual and automatic opening or closing of the gas-inlet.

. A further object is to provide a simple and inexpensive and effectivedevice for adj ustment to any gas-service,which may be readily andaccurately adjusted to regulate the exact supply of gas desired forconsumption.

With these ends in view my invention consists in certain features ofconstruction and combinations of parts, as will be hereinafter fullydescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection of myimproved gas-regulator with gage attached. Fig. 2 is a planview of the valve. Fig. 3 shows a modified form of valve and port.

A represents a gas-chamber and B an airchamber, the two being separatedby a flexible diaphragm, O, and inclosed by any suitable boxes, thoughfor economy preferably cast of metal in forms similar to those shown inthe drawings. These boxes are secured together at their adjacent flangededges, whereby the diaphragm O is securely held in place.

Extending laterally from the chamber A, and forming a continuation ofthe latter, is a gasvalve box, D, provided with the gas-inlet b, forconnection with the main and outlet 0, through which the gas is suppliedto the burners, and having the valve-seat d formed on its bottom. In theseat d and directly over the inlet 1) a narrow and elongated slot orport, e, is diagonally located. A sliding valve, E, adapted toreciprocate on the valve-seat d, is

guided thereon by the walls of the valve-box D, between which itreciprocates. The valveseat (2 and the valve E are entirely separatefrom the boxes forming the air and gas chambers, being detachable andconstructed of some nolrcorrosive metal or combinations of metals, whilethe shells or boxes themselves may be cast of any metal. By arrangingthe gas inlet or port and valve so that the latter gradually closes theport,the slightestincrease ot'pressure on the diaphragm is transmittedto the valve and the latter moved only so far as needed to cut off thisexcess. If the pressure should diminish from any cause whatever, thevalve will be moved so as to increase the size of the gas-inlet.

Secured together by the plates ff, respectively abm'e and below thediaphragm C, are the light upright rods FF, in such a manner as to havethe effect of one continuous rod projecting vertically through thecenter of the diaphragm. To the lower end of the rod F a bell-crank, G,is pivotally secured,which in turn is pivotally secured to a lug, g,projecting upward in the chamber A. The upper end of this bell-crank isloosely connected to the sliding valve'E by the link 71.

The upper rod, F, located in the air-chamber B,where it issafelyinclosed and protected against disarrangement, is pivotal]yconnected with a balance-lever, H. This lever H preferably has itsshort arm fulcrumed at point 9'. The opposite end or long arm of thelever is in the form of a screw-threaded stem,j, carrying the adjustableweight K, which consists, substantially, of a pairof nuts adapted toturn on the stem, the two being desirable to lock each other, to preventaccidental displacement.

Above the balancing mechanism the walls of the chamber B are preferablyrounded and more or less restricted, and a detachable cap, L, is placedto allow easy access to the chamber should it be desirable to regulatethe balancing apparatus. Through the pipe M air is supplied to theair-chamber B, and the peculiarity of this pipe is due to the fact thatit communicates directly with the outside air, in orderthat should thediaphragm 0 become broken or should it leak in any manner, allowing theescape of gas into the air-chamber B, there would be no escape'of theleaking gas into the cellar or room where the regulator is stationed,but all air would be carried off out of doors through pipe M.

A gage consisting of a U-shaped tube, N, containing a supply of water orsimilar liquid, and a graduated scale, 11, is open at one end to receivefree atmospheric pressure and connected to the gas-chamber by the pipe0. This gage may be detached from the chamber at point 0, the gate I?being turned to prevent the escape of gas.

In the modification shown in Fig. 3 the port eextends transversely ofthe valve-seat, instead of diagonally, and the sliding valve is beveled,the effect being the same, as before, to very gradually close or openthe gas-port from one end toward the other by the reciprocation of thisvalve over the port.

To regulate the device the weight K is moved to the extreme end of thestemj in direction indicated by arrow Q. Now, the gasis allowed to enterthe regulator, the nut or weight K being turned toward the fulcrum ofthe lever until the desired pressure is indicated on the gage. Thisbeing properly adjusted, the fluctuation of the gas-flow is regulated bythe valve E, the operation of which is to automatically close the port 6from one end to the other as the gas enters in large quantities, thusclosing it correspondingly as the diaphragm O is elevated by thegas-pressure and immediately opening the valve with the depression ofthe diaphragm, which takes place as soon as the pressure is decreased,the position of the weight K having the effect of normally depressingthe diaphragm when its cushion of gas from the chamber Ais suflicientlyremoved by consumption. Thus it will be seen that the adjustment of thevalve E over the port 6 is very precise, and if the pressure of the gasis very great the port may be closed until the smallest possibleaperture is left open.

It is evident that slight changes might be resorted to 'in the form andarrangement of the several parts described without departing from thespirit and scope of my invention; hence I do not wish to limit myself tothe particular construction herein set forth; but,

Having fully described my invention,what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with the air and gas chambers separated by aflexible diaphragm, of a valve-seat having a gas-port, a sliding valveadapted to close said port from one end toward the other, and devicesconnecting the diaphragm and sliding valve.

2. In a gas-regulator, the combination, with the air and gas chambersseparated by a flexi ble diaphragm, of a valve-seat having an elongatedgas-port, a sliding valve adapted to close said port from one end towardthe other, a rod secured to the diaphragm, and a bell-crank lever andlink connecting said rod and valve, substantially as set forth.

3. The combination, with the air and gas chamber separated by a flexiblediaphragm, and a valve-seat having an elongated gas-inlet therein, and avalve adapted to slide on said seat and close the port from one end tothe other, of a lever located in the air-chamber and connected with thediaphragm, balanceweights mounted on said lever, and means for operatingthe valve by the action of the diaphragm, substantially as set forth.

4. The combination, with the gas and air chambers, a flexible diaphragm,and a valvebOX, the latter being in open communication with thegas-chamber and provided with an inlet and outlet, of ahorizontally-sliding valve adapted to close said port from one endtoward the other and a pipe communicating with the air-chamber andleading therefrom out of the house, for the purpose substantially as setforth.

5. The combination, with the air and gas chambers separated by aflexible diaphragm, a removable cap forming a partial cover for theair-ehamber, a lever located in the airchamber and connected with thediaphragm, and balance-weights mounted on said lever, of a gas-pressuregage removably secured to the gas-chamber, substantially as set forth.

6. The combination, with an air and gas chamber, a diaphragm separatingthem, a valve-box projecting laterally from the gaschamber, this boxbeing provided with a gas inlet and outlet, and a slotted valve-seat, ofa sliding valve operated by the vibrations of the diaphragm, and anadjustable balancing mechanism for regulating the gas-pressure and agage for measuring the same, substantially as set forth.

In testimony whereofI have signed this specification in the presence oftwo subscribing wit-

